Missing windows imports (#322)

* Some new Windows links

Replaced links for PyWin32, Winpcap, pyreadline

* Update compatibility.py

scapy/arch/windows/compatibility.py

@@ -9,6 +9,13 @@
 
 from scapy.arch.consts import LOOPBACK_NAME
 from scapy.config import conf,ConfClass
+from scapy.base_classes import Gen, SetGen
+import scapy.plist as plist
+from scapy.utils import PcapReader
+from scapy.data import MTU, ETH_P_ARP
+import os,re,sys,socket,time, itertools
+
+WINDOWS = True
 
 def sndrcv(pks, pkt, timeout = 2, inter = 0, verbose=None, chainCC=0, retry=0, multi=0):
     if not isinstance(pkt, Gen):